The 24 inch display was made just for gaming, hence the new 3D feature.
When you're watching a movie, you want to be fully lost in the world and don't mind being sucked in to a larger screen. When you're gaming, especially competitively, things are different - you want to be able to view the whole screen quickly and not get lost, lest you lose your edge.
Sony's new PlayStation branded display is made specifically for gaming. It's a 1080p 24 inch TV with LED edge lighting and a 240Hz refresh rate. It also does 3D, but what's even cooler is the special SimulView mode that Sony has baked into the set.
When playing with or against a friend, SimulView does away with all the annoyances that come with playing split-screen. Instead of dividing the screen down the middle, it gives both you and your friend a full screen experience. Both of you wear 3D glasses and it arranges things so that each of you sees a 2D full screen version of the game. It's a pretty slick setup.
Sony says that larger versions of the set may be created based on demand, but for how 24 inches is where they're sticking. It carries and MSRP of $499 and will be available on November 13th.